Method of working updraft gas-producers.



Patented Mar. 7, 1911.-

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UNITE-n STATE PATENT OIlIPIC.v

JOHN FIELDING, F GLOUCESTER, ENGLAND.

METHOD or WoRKING UPDRAFT Gas-PRODUCERS,

To all whom it 'may concern: r

Be it'knovvn that I, Jol-IN Fiemme, a subject of the King of Great Britain, residing at Sherbourne House, in the 'city and county of Gloucester, England, have invvented certain new and useful Improvements in the Method of Working Ilpdraft Gras-Producers, of Which the following is a specification.'

The present invention relates to the working 'of upward draft gas producer of the type using bituminous fuel in which the main body of gas is led olf.. at a level' Where the fuel is more or less incandescent so that only a small proportion of eondensahle gases are carried off With: it, the bulkof such condensable gases vor vapor being led off at a higher level, usually above the fuel level,

ber leading to the gas turbine, the steam' generated by the combustion of the uncooled lil) ' ducers using composition of the condensable' vapors being supplied to the combustion chamber simultaneously with the air and combustible gas. no claim' to this manner Aof utilizing the steam generated by the combustion of the condensable vapors.

in the Working of gas pr0- bituminous fuel shows that it is essential to proper and regular Working that some means be employed to prevent the clogging up of the lire bythe accui'nulation of clinkcr and ash andin practice itis found that this is most effectively accomplishcd by passing through the fire a relatively large volume vof steam which not only tends toreduce` or prevent the for.- mati'pn of clinkjer, but also. enriches the gas by the addition of hydrogen resulting from the decomposition of thestcam in its passage through the lire.

I have found that Athe amount of steam which can be generated lby the combustion of the eondensable gases is not l:greater than is required or canl bceconomically' used -for this purpose. .According to my ,invention therefore I cause the steam generated by the Experience combustion of the 'condensable vapors toenter the lire along with the air supply, -it being found convenient first to use the steam specification of Letters Patent. vApplication filed January 18, 1909. Serial No. 472,997'. l

I therefore vmake' body of the fort-he purpose of driving an engine to Work a fan or blower for forcing the a1r,"together instead ofthe fan or blower a steam injector blower ma be used, this arrangement providing a kuid of closed circuit Within the producer plant for the utilization of the steam necessary in the Working of theproducer.

vof Working gas' producers herein. described Vin which the steam generator is lfired by a proportion ofthe gas-generated, the amount of steam willA vary' automatically in proporelinker tobe reduced, and. 'also the enrichment of the gas by the addition of hydrogen It combines the grcatest'economy with great simplicity of working and automatic regulation ofthe ire .and quality of.

In the practice of my invention the con- .densable vapors are led from the producer `that any tar which might'be deposited from .the condensable vapors is immediately gasified on contact With the red-hot bricks, thereby. preventing accumulation 'of tar vin' ber are led-into the fire-box of the boiler.'

The .fuel at the. lcvelgof. thev space being gases and only a small amount of condenstively small cleansing lplant is necessary for with the exhaust steamiintov the producer,.or

xvhole or partof -the condensable vapors de` rivcd from the first stage of the combustion of bituminous fuel, for the generation ofthe It is to be observed that by thel method tion to the total consumption of fuelA and..

therefore 'in proportion to the amount ofl to a fire-brick lined chamber where they are mixed with' air and areburned, causing theA brick lining to become intensely heated, so

the furnace. The' hot gases from this cham* air and Ipipe Gr.A

able gases arel present sc that.l a 'comparar atented Mar. l?, 1911.

will b e more or less. automatically regulated.l

Apparatus .for carrying out the process accordingto theinvention is illustrated inthe CTX purifying the gas and the amount of practically valueless tarry residuesv from the l.cleansing apparatus Will therefore also be small. p

The fuel is fed from a hopper I through a tube H depending 'within the producer chamberL/Mso as to leave an annular space' K from which the gases which are mainly condensable gaaes dueto distillation caused by radiated heat are carried by a short pipe J to a combustion chamberL lined with suitable refractory material where they mix with air entering tbe chamber at M and are burned, the combustion products being used to generate steam in the boiler O which may b eof any: suitable type and'from which the steam may be led through pipe P direct to the producer or to a steam' blower Q, in air inlet ipe C for su i l in@ air to the rodueup Al`iegulatin'gv5iilvte N controlspthe supply bf gases to the boiler furnace and the quantity of air'V mixed therewith may be similarly regulated.

Having thus describedthe nat-ure of my said invention and the best means I know of carrying rthe same` into practical effect, I

l. The method-of working upward draft gas producers for tlieproduction of a pure las from bituminous fuel, which consists in takingothe fixed gases and condensable vapors at different levels in. a producer, mix- .ing tlie condensablc vapors with air and burning the mixture vin a steam generator' furnace, and introducing the steam so prod need together with the supply of air to the said producer", whereby subs'taniiiil selfregulation of the producer is obtained, the rate`\of consumption of the fixed gases be ing accomplished by a corresponding. rate of generation of the condensable vapors and ronsequently 0f,tl1e steam supplied to the producer,

. 2. The method of working upward draft .gas producers for the production of a pure gas from bituminous fuel which consists in taking lofi' the fixed'gases and condensablc scribed.

In testimony whereof I have signed my, name to Ithis speciication in the presence of two subscribing witnesses.

i' JOI-IN IFIELIHNG.

Witnesses: A

JOSEPH MILLAnn, W. J .SKERrEN-- 

